Temperature Transmitter, 900 MHz RF Communication Method, Temp. Range (F) -22 Degrees to 212 Degrees , Temp. Range (C) -30 Degrees to 100 Degrees Accuracy 0.8F (0.5C) Internal, +/-1F external, Power Source 2/3 A Size LiMn02, Battery Life 2-5 yr., Features Internal/External Sensor, Height 1 In., Width 4 In., Depth 2.5 In., Wireless Range 2500 ft. (762m)Calibration Certificate NIST, Includes (1) 6 foot air probe, Manufacturers Warranty Length 1 yr. Temp Trak Wireless Temperature Monitoring System900 MHz TransmittersTemperature Transmitter 13A877 measures temperature with an internal sensor. Contact Transmitter 13A873 is used to monitor if doors are open or closed in a refrigerator or freezer. Temperature/Humidity Transmitter 13A872 measures temperatures and humidity with internal sensors.
